Solid State TestSolid State 43 Created on July 05, 2023 By Arvind SirSolid State English Medium 1 / 30The number of atoms in 100 g of fcc crystal with density (d) = 10 g cm-3 and edge length 200 pm is equal to 3x1025 1x1025 5x1024 2x1025 2 / 30Which of the following defect, if present lowers the density of the crystal – Constitution of F- Centers Frenkel Schottky Interstitial cation 3 / 30The maximum percentage of available volume that can be filled in a face centred cubic system by an atom is – 26% 34% 68% 74% 4 / 30The no. of atoms per unit cell in B.C.C & F.C.C is respectively – 1,2 1,3 8, 10 2,4 5 / 30Which is amorphous solid – Rubber Plastic Glass All of thise 6 / 30Doping of silicon (Si) with boron (B) leads TO n-type semiconductor p-type semiconductor Insulator Metal 7 / 30In a face centred cubic arrangement of A & B atoms whose A atoms are at the corner of the unit cell & B atoms at the face One of the A atom is missing from one corner in unit cell. The simplest formula of compound is– A7/8B3 A7B24 A7B3 AB3 8 / 30In a close pack array of N spheres, the number of tetrahedral holes are – N 4N 2N N/2 9 / 30The structure of sodium chloride crystal is – Body centred cubic lattice Square planar Face centred cubic lattice Octahedral 10 / 30In a face centred cubic unit cell, an atom at the face centre is shared by – 2 unit cells 6 unit cells 4 unit cells 1 unit cells 11 / 30In a compound, atoms of element Y form ccp lattice and those of element X occupy 2/3rd of tetrahedral The formula of the compound will be – X4Y3 X2Y3 X3Y4 X2Y 12 / 30The empty space in this HCP unit cell- 74% 47.6% 26% 32% 13 / 30The unit cell of a metallic element of atomic mass 108 and density 5g/cm3 is a cube with edge length of 409 pm. The structure of the crystal lattice is – hcp fcc None of these bcc 14 / 30Bragg’s law in given by the equation 𝑛 = 2θ sin θ 2𝑛 = 𝑑 sin 𝜃 𝑛 = 2𝑑 sin 𝜃 𝑛 θ 2 = d sin 𝜃 2 15 / 30In Corundum, oxide ions are arrangement in hcp arrangement and aluminum ion occupy two third of the octahedral Its formula is – Al2O3 Al2O4 AlO2 Al3O4 16 / 30In a body centred cubic arrangement, the number of atoms per unit cell is – 8 2 4 1 17 / 30The vacant space in B.C.C unit cell is – 46% 23% 32% 10% 18 / 30How many atoms are there in a unit cell of Mg which forms hexagonal crystals– 8 12 6 4 19 / 306 : 6 of NaCl coordination changes to 8: 8 coordination on – no effect on coordination number both (a) and (b) Applying high P increase in temperature 20 / 30Total volume of atoms present in BCC unit cell of metal is (r=atomic radius) 12 𝜋𝑟3/3 8 𝜋𝑟3/3 24 𝜋𝑟3/3 20 𝜋𝑟3/3 21 / 30Crystals can be classified into......... basic crystal habits 7 3 14 4 22 / 30Which of the following does not exhibit frenkel defect ZnS AgCl AgBr CsCl 23 / 30A solid is made of two elements X and Z . The atom Z are in C.C.P. arrangement while atoms X occupy all the tetrahedral sites. What is the formula of the compound- Unpredictable XZ X2Z XZ2 24 / 30The total number of Bravais lattice in a crystal is 32 7 23 14 25 / 30The rank (effective atoms per unit cell) of a cubic unit cell is 4. The type of cell as – Body centred Primitive None of these Face Centred 26 / 30Close packing is maximum in the crystal fcc None of these bcc Simple cube 27 / 30The number of atoms present in a simple cubic unit cell are – 3 4 1 2 28 / 30What is the simplest formula of a solid whose cubic unit cell has the atom A at each corner, the atom B at each face centre and a C atom at the body centre– AB3C A2BC AB2C ABC3 29 / 30Which among the following will show anisotropy – Paper Barium Chloride Wood Glass 30 / 30Graphite is an example of - Metallic crystal Molecular Solid Ionic Solid Covalent Solid Your score isThe average score is 45% LinkedIn Facebook Twitter VKontakte 0% Restart quiz